{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-22T15:18:25.284Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC8751",
  "document": {
    "abstract": "A stateful Path Computation Element (PCE) maintains information on the current network state received from the Path Computation Clients (PCCs), including computed Label Switched Paths (LSPs), reserved resources within the network, and pending path computation requests. This information may then be considered when computing the path for a new traffic-engineered LSP or for any associated/dependent LSPs. The path-computation response from a PCE helps the PCC to gracefully establish the computed LSP. The Hierarchical Path Computation Element (H-PCE) architecture allows the optimum sequence of interconnected domains to be selected and network policy to be applied if applicable, via the use of a hierarchical relationship between PCEs. Combining the capabilities of stateful PCE and the hierarchical PCE would be advantageous. This document describes general considerations and use cases for the deployment of stateful, but not stateless, PCEs using the hierarchical PCE architecture.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "authors": [
      {
        "name": "Dhruv Dhody"
      },
      {
        "name": "Young Lee"
      },
      {
        "name": "Daniele Ceccarelli"
      },
      {
        "name": "Jongyoon Shin"
      },
      {
        "name": "Daniel King"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "docId": "RFC8751",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "docLabel": "IETF RFC 8751",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "docNumber": "8751",
    "docNumber$meta": {
      "confidence": "high",
      "note": "From the RFC index entry (rfc-index.xml <doc-id>)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "docTitle": "Hierarchical Stateful Path Computation Element (PCE)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "docType": "Informational",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "doi": "10.17487/RFC8751",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "href": "https://doi.org/10.17487/RFC8751",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "pages": "21",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "publicationDate": "2020-03-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "references": {
      "bibliographic": [
        "RFC3209",
        "RFC3473",
        "RFC4726",
        "RFC5623",
        "RFC8051",
        "RFC8232",
        "RFC8453",
        "RFC8637",
        "RFC8685",
        "RFC8741",
        "RFC8745",
        "IETF.draft-ietf-pce-enhanced-errors-06",
        "IETF.draft-ietf-pce-pcep-yang-13",
        "IETF.draft-litkowski-pce-state-sync-07",
        "IETF.draft-dugeon-pce-stateful-interdomain-02"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      },
      "normative": [
        "RFC2119",
        "RFC4655",
        "RFC5440",
        "RFC5520",
        "RFC5925",
        "RFC6805",
        "RFC7525",
        "RFC8174",
        "RFC8231",
        "RFC8253",
        "RFC8281",
        "RFC8446"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc8751/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
      "updated": "2026-10-22T15:18:25.284Z",
      "version": "extractDocs.js@commit:7e15e4c54244"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc8751/",
        "updated": "2026-10-22T15:18:25.284Z",
        "version": "extractDocs.js@commit:7e15e4c54244"
      }
    }
  }
}